Mixed bags of 30mm circles (with or without a hanging hole). $18 per bag, makes 10 pairs, and bulk discounts apply automatically when you purchase. Now available here online.
Engraved Mixed Circle Bags
Mixed packs of 30mm circles with engraved patterns (with or without a hanging hole).Includes 10 different patterns to make 10 pairs (two different mixes available). Looks great on simple materials and paint-fill applied. Two different packs are available online here and here.